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伤害小
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  less damage
     This technique can effectively prevent borehole collapse,reduce the volume of flush fluid,lessen filtration,and create less damage to formation.
     该技术可有效地防止井壁坍塌 ,明显降低洗井液用量 ,减少滤失 ,且对地层伤害小
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     Application showed that LMWF has strong carrying capacity with less damage to formation and oil production can also be increased.
     应用表明,LMWF压裂液对地层伤害小,携砂性能好,提高了产油量。
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     Acidizing effects of five types of acid,including conventional mud acid,low concentration mud acid, fluorosilicic acid,fluoboric acid and organic retarded acid,on core Zhou 2 from Zhaozhou oilfield have been evaluated,and results show organic retarded acid,fluorosilicic acid and fluoboric acid can retard the reaction in contrast to conventional mud acid,and cause less damage.
     实验评价了常规土酸、低浓度土酸、氟硅酸、氟硼酸、有机缓速酸 5种酸液对大庆肇州油田州 2井岩心的酸化效果 ,表明有机缓速酸、氟硅酸、氟硼酸与常规土酸相比具有一定的缓速作用 ,对地层伤害小 ,在实际应用中可作为砂岩缓速酸使用。
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     Due to the advantages of CO 2 foam fracturing operation such as less damage to the formation, strong flow back ability, less filtration and good proppant carrying property, the fluid has won wide application in oil/gas fields, especially in the formation of low pressure and water sensitivity.
     CO2泡沫压裂液由于对储层伤害小、返排能力强、滤失量小和携砂能力强等特点,在油气田,特别在低压、水敏性储层中得到应用。
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     The mixture of 50mg/L ketoconazole +50mg/L nystatin +0.1% sodium hypochlorite is the best additive to prevent the fungal contamination in plant tissue culture and has slight damage to plants.
     50mg/L酮康唑+50mg/L制霉菌素+0.1%次氯酸钠组成的混合杀菌剂,抑菌效果好,对植物伤害小,是良好的防真菌污染添加剂。
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     keeping low pH value in a long time interval of reaction (<2 in 60 min) and thus low damage for the formation;
     在地层内可长时间维持低 pH值 ( <2 ,60min) ,对地层伤害小 ;
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     Other advantages of it are good rheological property, strong fracture making ability and sand carrying capacity, and little damage to formation, etc.
     该压裂液配制简单,不需要杀菌剂和破胶剂,具有流变性能好、造缝与携砂能力强、对地层伤害小、使用方便等优点。
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     In addition semiconductor lasers operating in 1450nm hurt less to skin and is the more secure to eyes.
     并且1450nm波长的半导体激光器对人体皮肤的伤害小,并且对人眼安全。
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     All the tests established that CO 2 foam fracturing fluid provides excellent temperature stability, shearing bearing ability and rheological property, and with strong sand carrying capacity and little damage to productive formation, it fulfillsthe requirements of most foam fracturing fluid's operation.
     并对泡沫质量为 5 0 %~ 70 %压裂液体系的剪切性能、耐温性能、流变参数、粘温性能、破胶与残渣、破胶液的表观性能和岩心伤害进行了评价。 结果表明 ,CO2 泡沫压裂液体系具有良好的耐温耐剪切性能和流变性能 ,携砂能力强 ,对储层岩心伤害小 ,可以满足大多数泡沫压裂施工的需要
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     Little Moons
     月亮
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     Little Man
     矮人
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     Honey injury
     甜蜜的伤害
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     TIME EFFECTS OF SMALL-DOSAGE ALCOHOL ON IMPAIRING SOME ASPECTS OF DRIVING
     剂量酒精伤害驾驶行为的时序效应
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     1 damages
     1 伤害规律
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  less damage
As a result of an decreased frequency of reprocessing and less damage of the tubing material an economic advantage is obvious.
      
Less damage of FAD- than NAD-catalyzed oxidative phosphorylation.
      
Non-peroxidised linoleic acid 25 mmol/l caused less damage than ultraviolet-peroxidised linoleic acid 25 mmol/l, both macroscopically (3 h:P>amp;lt;0.01; 12 h:P>amp;lt;0.05) and on histology (P>amp;lt;0.01).
      
This allows probe reinsertion and it causes less damage to the target cell, greatly facilitating in vivo optical study of cells.
      
Gerbils treated with 225 mg/kg dichloroacetate exhibited significantly less damage than the untreated group (p=0.05, Dunn's test).
      
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The formulation of resine solutions for impregnating silica sand,the preparation,cure and basic service performance of resine pre-coated sand are studied.The silica sand is coated with an epoxy resine containing aminopropyltriethoxysilane as coupling agent and cured in the medium of aqueous solutions of triethanolamine (TEA).The cured consolidated pre-coated sand gives compression strength of 4.9—6.8 MPa,with permeability being more than 100μm~2.In practise,the pre-coated sand is carried by a TEA solution and...

The formulation of resine solutions for impregnating silica sand,the preparation,cure and basic service performance of resine pre-coated sand are studied.The silica sand is coated with an epoxy resine containing aminopropyltriethoxysilane as coupling agent and cured in the medium of aqueous solutions of triethanolamine (TEA).The cured consolidated pre-coated sand gives compression strength of 4.9—6.8 MPa,with permeability being more than 100μm~2.In practise,the pre-coated sand is carried by a TEA solution and squeesed into the well to the end formation and undergoes its curing process,becoming consolidated after another TEA solution pumped in.This pre-coated sand can be used in sandy wells of medium to high water cut.Field tests in 21 wells performed from Dec.1984 to April 1988 show that 80% of these tests is successful.

本工作研究了浸渍料的配方、涂料砂的制造工艺和基本应用性能,介绍了现场应用结果。选用含有胺丙基三乙氧基硅烷偶联剂的601环氧树脂为石英砂的包复剂,涂料砂在含过量三乙醇胺固化剂的水溶液中固结,以适应现场施工的需要。此种涂料砂施工工艺简单,对地层伤害小,可用于中、高含水量的油井防砂。

The contents of free amino acid and free proline inside wheat (Triticum sativum) and gram (Phaseblus auveus) seedlings increase, when they are fumigated with sulfur dioxide gas. Various plants content different amounts of tree proline and the plants possessing higher concentration of free proline encounter smaller injury than those of lower concentration after the fumigation. These conclusions are consistent with the fact that the accumulating of free proline under stress conditions are benifical for resisting...

The contents of free amino acid and free proline inside wheat (Triticum sativum) and gram (Phaseblus auveus) seedlings increase, when they are fumigated with sulfur dioxide gas. Various plants content different amounts of tree proline and the plants possessing higher concentration of free proline encounter smaller injury than those of lower concentration after the fumigation. These conclusions are consistent with the fact that the accumulating of free proline under stress conditions are benifical for resisting stress conditions.

SO_2熏染的小麦、绿豆幼苗,体内游离氨基酸、游离脯氨酸积累增多。各种植物游离脯氨酸的含量各不相同,含量高的污染后伤害小。这与逆境下游离脯氨酸积累有利于抗逆境的论点相符。

The main component of the gas well control fluid CMPC is a mixed cellulose ether-carboxymethyl hydroxyoxyisopropyl cellulose,CMPC,which is more water-soluble and viscosity-enhancing than CMC.The filtrate loss of the fluid CMPC is an order of magnititude lower,its temperature tolerence is much higher(up to 140℃) and its shear resistance is better comparing with other fluids(CMC,HEC,ZR,and BSP).It is compatible well with the formation water and has adjustible values of density l.0-l.35g/cm3.The field tests in...

The main component of the gas well control fluid CMPC is a mixed cellulose ether-carboxymethyl hydroxyoxyisopropyl cellulose,CMPC,which is more water-soluble and viscosity-enhancing than CMC.The filtrate loss of the fluid CMPC is an order of magnititude lower,its temperature tolerence is much higher(up to 140℃) and its shear resistance is better comparing with other fluids(CMC,HEC,ZR,and BSP).It is compatible well with the formation water and has adjustible values of density l.0-l.35g/cm3.The field tests in two gas wells over 13 and >65 days are successful.The fluid CMCP is reusable.

本文介绍了新型气井压井液主剂CMPC(改性羧甲基纤维素)的化学特征,考察了CMPC压井液的性能,报导了该压井液的矿场试验情况。室内与矿场试验结果表明,该压井液的滤失量低,能耐受140℃的高温,密度可调范围为1.0-1.35g/cm3,对地层的伤害小,可回收并重复使用,能满足大庆油田的使用要求。

 
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